TOP PHOTOS: Ukrainian capital suffers deadliest day since the breakup of the Soviet Union a quarter-century ago

An anti-government protester stands atop a barricade at Independence Square in Kiev, Ukraine, Thursday, Feb. 20, 2014. Protesters advanced on police lines in the heart of the Ukrainian capital on Thursday, prompting government snipers to shoot back and kill scores of people in the country's deadliest day since the breakup of the Soviet Union a quarter-century ago. (AP Photo/ Marko Drobnjakovic)